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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Administrative data

additional ecotoxicological information
Type of information:
experimental study
Adequacy of study:
other information
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Basic data are given, the study meets basic scientific principles

Data source

Reference Type:
Gewässerökologische Prüfung des Umweltverhaltens von Zeolith A
Hamm A and Raff J
Bibliographic source:
Die Prüfung des Umweltverhaltens von Natrium-Aluminium-Silikat Zeolith A als Phosphatersatzstoff in Wasch- und Reinigungsmitteln. Schmidt, Berlin. Umweltbundesamt, Materialien 7/79, 72-77

Materials and methods

Test material

Constituent 1
Reference substance name:
Automatically generated during migration to IUCLID 6, no data available
Automatically generated during migration to IUCLID 6, no data available
Details on test material:
Zeolite A (SASIL, sodium aluminium silicate), doped with Indium
- Chemical name: Zeolite, cuboidal, crystalline, synthetic, non-fibrous
- Framework: cuboidal

Results and discussion

Any other information on results incl. tables

Effects in ponds:
Nutrients were more abundant in static ponds than in flow-through ponds, producing more phytoplankton, but less macrophytes.
There were no qualitative or quantitative differences between SASIL-treated and control ponds of both types concerning phytoplankton (14 species studied). The Shannon diversity index for phytoplankton did not differ from the untreated controls. However, species diversity was greater in the static ponds. Development of macrophytes was strongest in the SASIL-treated flow-through pond (80% covered), whereas weight gain of fish (carp) was slightly less compared to control or static ponds, probably due to dense plant growth. No differences concerning macrophytes or fish were found in treated and control static ponds.
No differences were observed in heavy metal contents of treated and control ponds. Sasil was found in the upper layers (0-5 cm) of the sediment.

Effects in streams:
No significant differences concerning degradation of organic substances (measured as BOD, COD or organic C) and the biocoenoses between SASIL-treated and untreated streams were found. There was a slight increase in the saproby index of the SASIL-treated stream. In the test with sewage-effluent, also no significant
differences between treated and untreated streams was observed concerning degradation of organic substances and biocoenotic changes (esp. zoobenthos was quantitatively studied). Sasil was settled off the streams for 80-90%, the rest stayed in the sediment (60-240 mg/kg d.w. after some months).

Applicant's summary and conclusion